* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
ul,li { list-style: none; }

a{
    text-decoration: none;
    color: black;
}
/* 公共样式 */
h1,h2,h3,h4{
    font-family: '微软雅黑';
}
/* body的背景颜色 */
body { background-color: #f4f4f4;line-height:1;font-family: "宋体"; box-sizing: border-box;}
.bor1 {
    border: 3px solid red;
}
.bor2 {
    border: 2px solid blue;
}
.bor3 {
    border: 1px solid green;
}

/* 相对定位 */
.rel { position: relative; }
/* 绝对定位 */
.abs{ position: absolute }
/* 固定定位 */
.fixed { position: fixed; }
/* 隐藏 */
.dsn { display: none; }
/* 宽度100% */
.w100p { width: 100%; }
.h100p { height: 100%; }

/* 颜色 */
.fff { color: #fff; }
.f666{ color: #666; }
.f888{ color: #888; }
.f999{ color: #999; }
.ff8{ color: #ff8200; }
.bg-ff8{
    background-color: #ff8200;
}
.bg-fff { background-color: #fff; }
/* 主题色 */
.base { color: #ffc107; }
.bg-base { background-color: #ffc107; }

/* 字体 */
.f10 { font-size: 10px; }
.f12 { font-size: 12px; }
.f14 { font-size: 14px; }
.f16 { font-size: 16px; }
.f18 { font-size: 18px; } 
.f20 { font-size: 20px; }
.f22 { font-size: 22px; }
.f24 { font-size: 24px; }
.f26 { font-size: 26px; }
.f28 { font-size: 28px; }
.f30 { font-size: 30px; }
.f32 { font-size: 32px; }
.f34 { font-size: 34px; }
.f36 { font-size: 36px; } 

/* 弹性盒子 */
.flex { display: flex; }
.jc-c { justify-content: center; }
.jc-sb { justify-content: space-between; }
.jc-sa { justify-content: space-around; }
.jc-se { justify-content: space-evenly; }
.aic { align-items: center; }
.ai-fs{
    align-items: flex-start;
}
/* 盒子排成一列 */
.fdc { flex-direction: column; }
/* 剩余空间分配 */
.fg1 { flex-grow: 1; }
.fww {flex-wrap:wrap;}
.fcc {display: flex;justify-content: center;align-items: center;}

/* margin */
.mt-5 {margin-top: 5px;}
.mt-10 {margin-top: 10px;}
.mt-15 {margin-top: 15px;}
.mt-20 {margin-top: 20px;}
.mt-25 {margin-top: 25px;}
.mt-30 {margin-top: 30px;}
.ml-5 {margin-left: 5px;}
.ml-10 {margin-left: 10px;}
.ml-15 {margin-left: 15px;}
.ml-20 {margin-left: 20px;}
.ml-25 {margin-left: 25px;}
.ml-30 {margin-left: 30px;}
.mr-5 {margin-right: 5px;}
.mr-10 {margin-right: 10px;}
.mr-15 {margin-right: 15px;}
.mr-20 {margin-right: 20px;}
.mr-25 {margin-right: 25px;}
.mr-30 {margin-right: 30px;}
.mb-5 {margin-bottom: 5px;}
.mb-10 {margin-bottom: 10px;}
.mb-15 {margin-bottom: 15px;}
.mb-20 {margin-bottom: 20px;}
.mb-25 {margin-bottom: 25px;}
.mb-30 {margin-bottom: 30px;}
/* 上下左右15 */
.m15{
    margin-top: 15px;
    margin-bottom: 15px;
    margin-left: 15px;
    margin-right: 15px;
}
.p15{
    padding-top: 15px;
    padding-bottom: 15px;
    padding-right: 15px;
    padding-left: 15px;
}

/* padding */
.pt-5 {padding-top: 5px;}
.pt-10 {padding-top: 10px;}
.pt-15 {padding-top: 15px;}
.pt-20 {padding-top: 20px;}
.pt-25 {padding-top: 25px;}
.pt-30 {padding-top: 30px;}
.pl-5 {padding-left: 5px;}
.pl-10 {padding-left: 10px;}
.pl-15 {padding-left: 15px;}
.pl-20 {padding-left: 20px;}
.pl-25 {padding-left: 25px;}
.pl-30 {padding-left: 30px;}
.pr-5 {padding-right: 5px;}
.pr-10 {padding-right: 10px;}
.pr-15 {padding-right: 15px;}
.pr-20 {padding-right: 20px;}
.pr-25 {padding-right: 25px;}
.pr-30 {padding-right: 30px;}
.pb-5 {padding-bottom: 5px;}
.pb-10 {padding-bottom: 10px;}
.pb-15 {padding-bottom: 15px;}
.pb-20 {padding-bottom: 20px;}
.pb-25 {padding-bottom: 25px;}
.pb-30 {padding-bottom: 30px;}

/* 字体加粗 */
.fw-100{
    font-weight: 100;
}
.fw-200{
    font-weight: 200;
}
.fw-300{
    font-weight: 300;
}
.fw-400{
    font-weight: 400;
}
.fw-500{
    font-weight: 500;
}
.fw-600{
    font-weight: 600;
}
.fw-700{
    font-weight: 700;
}
.fw-800{
    font-weight: 800;
}
.fw-900{
    font-weight: 900;
}
.fw-b{
    font-weight: bold;
}
.fw-br{
    font-weight: bolder;
}
.fw-n{
    font-weight: normal;
}

/* 底部样式 */
footer{
    div{
        height: 50px;
        bottom: 0;
        .active{
            color: #ff8200;
        }
    }
}
/* 空白 */
.blank{
    height: 60px;
}